/*
 * Copyright © 2015 Cask Data, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */

package co.cask.cdap.test;

/**
 * Managing the worker in an application.
 */
public interface WorkerManager extends ProgramManager<WorkerManager> {

  /**
   * Changes the number of instances.
   * @param instances number of instances to change to
   */
  void setInstances(int instances);

  /**
   * Returns the number of instances.
   *
   */
  int getInstances();
}
